Stovepipe casing



`or lowered casing is set and Patented oct. 15', 1929 WIL-MAM E2 RU'PLEY, 'on Los ANGELES, o

a. STEEL COMPANY or cALIEonnIA, or

Tron' or CALIFORNIA ALIFORNIA, ASSIGNOR T0 WESTERN PIPE SAN FRANCISCO, CALIFORNIA, A- CORPORA- srovEPIPE oAsiNG Original application filed September 26,

This invention relates to-stove pipe casing and refers more particularly to a stove pipe casing composed of a plurality of concentric tubular sections which are rigidly welded one to the other at their connecting joints.

r1`his application is a division of my copending application for stove pipe casing and method and apparatus of forming the same, filed September 26, 1925, Serial No. 58,951.

i tove pipe casing is employed in the sinking of wells for the recovery of either water, gas or oil. Such stove pipe casing is driven into the hole formed for the well. lWhen in the proper position, the stove pipe remains as apermanent part of the well. 1n order to prevent the collapse of suoli a stove pipe casing, the same must be of great strength and as the same is permanent part of the well, must be of great durability.

Many types of stove pipe casing are now in use which are for the most part of expensive construction or are of insecure manner of connection of the sections one to another so that the same part during the driving of the casing.

lt is, therefore, an object of this invention 'to provide a stove pipe casing of any `durable construction and of great strength so that the i withstand' the driving of the samel :same will ...a l will be extremely adaptable for use as a permanent part of a well.

.Another object of this invention is to provide a stove pipe casing having a practically uniform exterior contour throughout its length so that the samewill not hang up during the driving' of the same.

ther objects and advantages of this invention will be apparent from the following detailed description of a preferred embodiment thereof as illustrated inthe accompanying drawings.Y

in the drawings:

Figure 1 is a side elevation of a stove pipe casing embodying this invention.

Figure 2 is a sectional side elevation thereof. I y

Figure 3 is a side elevation of a fragment of stove -pipe embodying this invention, illusfsections 4 and "sections 4, 5` and 6 so 1.925, Serial No. `58,951. Divided and this application filed August 5, 1926. Serial N0. 127,354.

trating the manner of assembling the sections thereof. i

1n the preferred embodiment of this invention, illustrated in the accompanying drawings, 1, 2 and 3, illustrate a series of tubular sections of sheet steel which tubular sections 1, 2 and 3 are disposed within a plurality vof outerv tubular sections 4, 5 and-6. The tubular sections 1, 2 and 3, and 4, 5 and 6, are from three feet up in length, depending upon that desired by thev manufacturer constructingthe stove pip'e casing. The ends of ,the tubular sections 1, 2 and 3 are abutted and the ends of the sections 4', 5 and Gare abutted between the abutted ends of the inner sections 1, 2 and 3 so that the joints formed in the casing are staggered.

The joints between the inner sections are electric or acetylene welded'preferably `with a butt-weld so that a welded joint is made that secures the ends of the sections together and .secures the ends of the sections to the louter section overlaying the same; Such a weld- 'ing connection'is illustrated' at 7 wherein stheabutting ends of the tubular sections -1 and 2 are welded together and the two sections 1 and 2 are welded to the outer sectiOn 4. L f I v A similar weldis formed between the. abutted ends of the outer sections and the inner .casing,for` example, the adjacent ends of the 5 are welded together and to the inner casing as illustratedatfn. v

The tubular sections 1, 2 and 3 are of slightlyvless exterior diameter than the tubular 'within the interior of the sections 4, 5 and 6. The tubular sections comprising this stove pipe casing are formed of sheet steel-andare 'lap-riveted as illustrated at 8 and 9.

vEach section'or stand of stove pipe casing is formed of a plurality of concentrictubular sections andvmay be of any desired `length Yand these stands are in practice built up to about twenty-eight or thirty feet. The end r that the same willy fitl of either tubular section 10 projects from the end of the outer end tubular section 11 approximately one-half its length as illustrated in Figure 3. On a secondsection or stand of casing, the end outertubularmember 12.pro.

casing.

jects approximately one-half its length beyond the end of the inner tubular member 13. A plurality of perforations 14 are formed around the circumference of the outer tubular member 12 immediately above the end of the tubular section 13. In assembling two stands or sections of stove pipe casing when the `saine are in position to be lowered ina well, the end of the tubular section 10 is iitted into the end of the tubular section 12 with the end 15 thereof in abutment with theend 16 of the tubular section 13. A Welder then spotwelds through the perforations 1A, welding the tubular section 10 to the tubular section 13 and to the tubular section 12 much in the same manner as is illustrated at 7 except that in case of the welding through the perforations, the weld connecting the three tubular sections is not continuous as `illustrated at 7. The Welder then welds the sections 11 and 12 together at their ends and to the inner section v10 to form exactly the saine manner of welded connection as is illustrated at 7. By this means,the stands or sections of stove pipe casing are secured together in approximately the saine manner and Vhave approximately the same strength as the connections formed between such sections as 1, 2 and 4l.

An elevator 17, employing slips 18 is illustrated in Figure 1 as gripping the outer surface of such a stove pipe casing. The entire length of the stove pipe casing may be picked in the manner illustrated in the patent granted to Morgan L. Sweeney, on September 11, 1917, Serial No. 1,240,098.

Having fully described a preferred embodiment of this invention, it is to be understood that I do not wish to be limited to the exact v details herein set forth which may obviouslyl be Avaried in detail without :departing from the spirit of my invention as set forth in the appended claims. Y

I claim:

projecting end of the outer tubular section v adjacent the end of the last inner tubular sectionat that end ofthe stand through which perforations the abutting ends of the inner tubular sections kare welded together and-to the outer casing.

4. A pipe casing comprising a plurality of vinner tubular sections within aV plurality of outer tubular sections, the abutted vjoints of the inner sections being staggered in relation to the abutted joints of the outer sections, the abutted edges of said sections being welded together and to the opposite concentric sections.

20th day of July, 1926.

WILLIAM E. RUPLEY.

Signed at Los Angeles, California, this 1. A stovepipe casing comprising ya plu- Y rality of inner' tubular sections concentric vwithin a pluralityof outer tubular sections and weldedV staggered joints formed at the the said sections tothe opposite concentric member. f

abutted ends ofthe said sections and welding l 2. A stove pipe casing comprising a pairV of concentriccasings, each of which casings being composed of aplurality oft-ubular sectionswelded at their abutted ends to each other and to the opposite concentric casingA intermediate 3. A stove pipe casing comprising a concentric casing, each stand of which casing comprises a plurality of tubular sections welded together at their adjacent ends and to the opposite concentric casing intermediate the joints thereof, the ends of the end inner tubular member projecting out from the strand at one end and the end of the end outer tubujoints formed in the opposite n VllO 

